Scenario overview: You respond to a residential fire involvi…

Scenаriо оverview: Yоu respond to а residentiаl fire involving a 42-year-old man weighing 176 pounds. Firefighters have moved him to a safe area. He sustained partial- and full-thickness burns involving his entire anterior chest and abdomen, entire left arm, and entire right leg. His face has superficial redness without blistering. He is alert, reports severe pain, and has soot around his mouth.Phase Post Scene—Hospital Arrival and HandoffFollowing transfer to the hospital stretcher, the intubated patient’s SpO₂ falls from 98% to 89%. Breath sounds are markedly diminished on the left, waveform capnography remains present, and the tube marking has advanced from 22 cm to 26 cm at the teeth. Which action should occur first?